Motor-clutch throw-out



E. M. HEYLIVIAN). DECDI CITIZISNIs TRUST @I sAvINGs BANK. ADMINISTRATOR.

MOTOR CLUTCH THROW-OUT. APPLICATION FILED IANAl I9I9.

To all who/f2, 'it may @Unna/17,

exi power of th@ @ik ,m6, and n bmaking'stmn, incident* '0 a, ccf "'mzmca 01":he exceSsiv-e had strain,

vided@ The mw: ns umlixcd in' cfu 'm i155 01,55 th details uf bhe uveiion is deshn is@ prmit imi. fdiate cmxtxo by the driver of ha eluted. "r': z-\vng :auch auou'mtic raies-30,

` without relaylg the load airain Aif deh@ mmc/tm may, 'be r 'Axl/isn, or continued in mov l el. a

Specification of Lters Patent.

den compes A the lmor 'traum the long; zum 7 o1 wm for opmton ign the usugxl msm serial im 26mm autom:

ma L

a trip-Mm 8,

. the trip arm 8 to'engage and operate the lever G, and through the pull rod 12, move the angle lever to cause the rod 1S) to bear upon and depress the clutch lever 1G. The extent ot' movement is, of course, suliicient. to disengage the clutch, thus freeing the tractor from the power of the engine. If it is desired to regain control of the propulsion of the tractor without relieving the load strain, for example,` as in backing, the

operator will depress the clutch lever 1b beyond that incident to the automatic operation, as all clutches have a free movement beyond that point necessary to their disengagement. This further movement of the clutch lever permits the angle lever 15 to be manually shifted to the other side ot' its pivot or tnlcrum, or to inoperative position with relation to the clutch lever, as plainly shown by dotted lines in Fig. El. yThe clutch lever' is now free, and may be permitted to throw the clutch at will, or, in other Words, the driver has complete control. Following readjustment or relieiI of the excessive load strain conditions, the angle lever may be restored to normal or operative position by depressing` the clutch lever and manually shifting the angle lever so that both arins thereof will be on the proper side of its fulerum, that is, in their initial position, and thel parts are again ready and set to respond to overload strain on the draw-bar.

The implement connecting end ot the rflraw-bar is capable of being shifted laterally for particular connections, such as for changing the line of draft between the tractor and the implement, a detail whereby such movement is permitted being shown in Fig. 5. rthe rear hanger is liei'e shown as formed with an clongatedway 2l), in which the draw-bar is slidably mounted, and in which, as by pins 21, the draw bar may be held in a variety of positions. To coinpensate for this movement of the draw-bar, and yet secure effective action of the throwout at the saine degree of overload, the triparm 8 is preferably curved on a radius coi'- responding to the swing of the draw-bar, in adjustment, so that the trip-arm Will engage the lever 6 under the same degree of move- "ment ofthe draw-bar in all adjustments of suoli draw-bar. s

'The threaded connection of the pull rod 12 with -the coupling 13, as described, permits the convenient adjustmentof the extent of movement of the draw-bar necessary to operate the throw-out. By lengthening or shortening the pull rod` the lever (5 willbe correspondingly moved to bring the free end of the arm 7 of .such lever normally in desii-ed distance adjustment with relation tothe trip-arm. This will provide for aI shorter or longer movement of the draw-bar to operate the throw-out, as may bedesired.

The parts of the improved throw-out are here shown as applied to a tractor through various supporting brackets, bolted oi' otherwise secured in place. This provides for the application of the invention to tractors now in ilse or completed. though it is obviously apparent that the details described may be mounted in or on integral supports built as a part of a tractor, where the improvementis to be embodied as a part of a tractor as built.

rlhe in'iportant feature of the invention resides inl thc thro\\'out adapted to be automatically responsive to an overload strain, and at the same time so constructed and arranged that the driver may at once re gain control of the clutch mechanism for all usual purposes, and this wit-hout other than what is in effect the usual clutch operatiug movement. The parts otI the tractor and following implement are thus coinpletcly safegnardial against breakage or overthrow through excessive load strain, as when the implement eng agesl underground iminovablc objects, such as rocks, roots, and the like, The invention is primarily designed for application to tractors, though it is obviously applicable to any mechanical draft means designed to be protected against excessive load Strain.

While the foregoing is the preferred form of my invention, l desire it to be understood that I do not liiriit myself to the precise structure shown and described, as it is obvioiis'that the same may be variously modified without departing from the Spirit ol' the invention. 4

W hat is claimed is 1. An overload throw-out for clutches, coinprisinga member mo'vable under the overload, and a clutch operating element actuated by said member to release the clutch, such clutch being freed from the influence of such element through further movement of the clutch operating element in the release direction.

2. An overload throw-out for clutch operating levers, comprisingl a member movable under overload, and an element actuated by said member to engage yand move the clutch lever to release position, said element being movable to an inoperative p0- sition to free the clutch lever upon further manual movement of such clutch lever in the release directibn.

3. An @vel-load throw-out for clutch levers, comprising a member movable. under overload, and an angle leverfulcrumed on said clutch lever and operable by said member to engage anelrmove the clutch lever to clutch release position, said angle lever be-I ing movable'to inoperative position after a` succeeding manual movement of the clutch lever in release direction, to thereby relieve the clutch leverj of the inuence from such'.

element?.

4. An overload throw-ont rtor clutchle' vers, ,comprising an angle lever-'fulcrumed on said. clutch lever, said angle lever having two arms4 projecting on the same side ofthe fulcrum, a member operable by the over-load, connection between said inem-- ber and one arm ofthe angle lever, and a rod proj ectingrom the other `arm vand bearing onl the clutch lever.

5. An overload throw-outfor clutch le'- vers, comprising a. member movable. under overload, an angle lever fulcrumedon'the clutch lever and having twoparms on the same slde of the fulcrum, one of said arms bearingl on the clutchlever, vand a connection between said member and the other arm of the angle leven-whereby to permit shifting of the angle lever to inoperative position upon a 'manual movement of the clutch lever succeeding the throw-out movement thereof.

6. The combination with a tractor having` a clutchbperating lever, of .1 drawbar; means to permit longitudinal movement of the draw-bar under excessive load strain,` an angle lever fulcrumed on the clutch lever and carrying a to bear 'on-said clutch lever, a trip carried -by the draw-baia and means engaged by the trip in the longitudinal movement of the draw-bar to actu-' ate the angle lever and thereby vmove the .clutch lever.

7. A tractor having'a clutch operating lemounted ontlieclutch' lever and having a ver, a draw-bar longitudinally movable underexcessive load strain, an angle lever part bearinguon said lever, a trip lever mounted on the tractor, la trip carried by the draw-bar to engage'and operate the trip lever in the lonoitudinal movement of the draw-bar, and an adjustable connection between the angle lever and trip lever. l

8. A clutch lever throw-out for tractors, including a draw-bar held against movement except under overload, an angle lever inlcrulned on the clutch lever and having a part bearing on. theclutch lever, a trip on the drawbar,.a trip lever pivotally support-f.

ed on the tractor, and a pull rod connected to the-angle lever and to the trip lever, the connectionl of the pull rod and trip lever beingadjustable ali-d pivoted.

.lever inthe overload movement of the draw- 10. 'A clutch lever throw-out including Va throw-out means mounted"l on the clutchl lever and movable under excessive load strain to operate the clutch lever in arelease oli-- rection, said means being adapted to be rendered inoperative with relation to the clutch lever upon a farther movement of such clutchd lever in the release direction.

In testimony whereof l affix my Signature.

Vriavvia-n1) iviT HEYLMAN. 

